The silicate ion shown in the picture below combines with beryllium and aluminum to form the mineral beryl.What is the formula and charge of the silicate ion? 
Definitions:
Systolic Reading
The pressure in the arteries when the heart beats and fills them with blood.
Pulmonary Capillaries
Tiny blood vessels located in the lungs where gas exchange of oxygen and carbon dioxide occurs.
Perfusion
The process of delivering blood to a capillary bed in the biological tissue.
Diffusion
The process by which molecules intermingle as a result of their kinetic energy of random motion, leading to a net movement from a region of higher concentration to one of lower concentration.
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